jQuery.validator.addMethod("mobilePhone", function(value, element) {
	return this.optional(element) || /^((\+86)|(86))?1[3578][0-9]{9}$/.test(value);
});
$.validator.addMethod("letterAndNumber", function(value, element){
	return this.optional(element) || /^[\d|\w]+$/.test(value);
});